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ACPI: PCI: Switch to use acpi_evaluate_dsm_typed()

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The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Andy Shevchenko 2023-10-02 16:54:24 +03:00 committed by Rafael J. Wysocki
parent 8a749fd1a8
commit 9fbdc05042
1 changed files with 3 additions and 3 deletions
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6
drivers/acpi/pci_root.c
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@ -1055,9 +1055,9 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
* exists and returns 0, we must preserve any PCI resource
* assignments made by firmware for this host bridge.
*/
obj = acpi_evaluate_dsm(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 1,
DSM_PCI_PRESERVE_BOOT_CONFIG, NULL);
if (obj && obj->type == ACPI_TYPE_INTEGER && obj->integer.value == 0)
obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 1,
DSM_PCI_PRESERVE_BOOT_CONFIG, NULL, ACPI_TYPE_INTEGER);
if (obj && obj->integer.value == 0)
host_bridge->preserve_config = 1;
ACPI_FREE(obj);